You are a good mapper! Your maps are some of my favorite, being that they are all unique and easily identifiable when they pop up in rotation. I always enjoy a refreshing break from the monotony of village_map126.
I QMU all of them except Snow Plateau...it's basically unplayable for cavalry, since the 3rd person camera is always up in the foliage of all the trees.
Heathland is awesome. The only suggestion I have is to barrier off the steep cliffs. Climbing up and fighting delayers on nearly vertical cliff faces is one of my greatest pet peeves about maps...just like underwater battles, it's very unrealistic and not fun. You could always build some wooden structure there to negate the balance effect of removing it.